Patents by Inventor Mark James Hirsch

Mark James Hirsch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dispensing toner additives via carrier dispense
    Patent number: 8802345
    Abstract: The present disclosure provides a process for the preparation of developer compositions comprising: a first developer comprised of carrier and toner comprised of resin, pigment, polyolefin, compatibilizer, charge control agent, and metal oxide surface additive, and adding thereto a second developer comprised of carrier, and second compatibilizer, charge control agent, and metal oxide surface additive. The second developer can be directly dispensed into a developer housing.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: August 12, 2014
    Assignee: Xerox Corporation
    Inventors: Mark James Hirsch, Kip L. Jugle, John R. Falvo
  • DISPENSING TONER ADDITIVES VIA CARRIER DISPENSE
    Publication number: 20140106276
    Abstract: The present disclosure provides a process for the preparation of developer compositions comprising: a first developer comprised of carrier and toner comprised of resin, pigment, polyolefin, compatibilizer, charge control agent, and metal oxide surface additive, and adding thereto a second developer comprised of carrier, and second compatibilizer, charge control agent, and metal oxide surface additive. The second developer can be directly dispensed into a developer housing.
    Type: Application
    Filed: October 17, 2012
    Publication date: April 17, 2014
    Applicant: XEROX CORPORATION
    Inventors: Mark James Hirsch, Kip L. Jugle, John R. Falvo
  • Polymeric particles as external toner additives
    Patent number: 6566025
    Abstract: A toner composition includes toner particles formed of a resin and a colorant; and one or more external additives, at least one of the external additives including polymeric particles, applied to a surface of the toner particles. The polymeric particles include a polymer selected from polymethylmethacrylate, modified polymethylmethacrylate, halogenated polymethylmethacrylates, and mixtures thereof.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: May 20, 2003
    Assignee: Xerox Corporation
    Inventors: Mary L. McStravick, Mark James Hirsch, Thomas W. Pike, Ronald J. Koch